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(No Model.)

2 Sheets-Sheet 1. P. W. KRANTZ.

LUBRIGATOR.

Patented July 29, 1890.

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(No Model.) 2 Sheets-Sheet 2. P. W. KRANTZ.

LUBRIGATOR Patented July 29, 1890.

UNITED STATES PATENT OFFICE.

'FREDRICII \V. KRANTZ, OF DETROIT, MICHIGAN, ASSIGNOR TO THE MICIII- GAN LUBRIOATOR COMPANY, OF SAME PLACE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 433,008, dated July 29, 1890.

Application filed February 24, 1890. Serial No. 341,583. (No model.)

To aZZ whom it may concern: arrangement, it is obvious that an independ- Be it known that I, FREDRICH \V. KRANTZ, ent pipe may take the steam from the boiler of Detroit, in the county of \Vayne and State to the condenser, while another leads into of Michigan, have invented new and useful chamber 13, the pressure in both being that Improvements in Lubricators, of which the of the boiler.

following is a specification. The water of condensation flows down the My invention relates particularly to that pipe D, controlled by a stop-cock E, into the class of lubricators called hydrostatic, in single oil-chamber E, which is filled with oil which oil is intended to be supplied to the through the sight-glass G, when the cap G is m two cylinders of a locomotive-engine from aunscrewed. The air in the oil-cup finds a single oil-reservoir, and which are provided vent through the pipe H.

with independent sight-feeds filled with wa- The oil floating on the accumulating water ter, through which the oil rises drop by drop in the common oil-chamber F flows out of the in regulated supply; or any other approved two pipes I and I into the sight-feeds K and 5 sight-feed may be used.- K under regulation of the valve L. As all.

Itconsistsinachamberplacedin the steamthese parts appertaining to the lubricator way,into which converging multiple oil-ducts shown are familiar elements of the up-drop leading from the oil-reservoir discharge oil lubrieators in common use, they do not reunder substantially the same pressure as that quire detailed description. The oil passes 20 maintained in the oil-reservoir, and from out at the top of the sight-feed under checkwhich chamber it flows through oil-pipes valves K and K Means is provided for inleading to the valve chests or cylinders, dependently supplying oil to the cylindersin thereby dispensing with the equalizing-tubes case of breakage of a sight-feed glass, which in familiar use. is already covered by Patent No. 342,753, is- 25 In the annexed drawings, making part, of sued to me, and need not be described herein. this specification, Figure 1 is a vertical sec- The oil flows inward from the sight-feeds tion on the plane of the supply-pipe, which furthrough M and M which lead into the walls nishes steam to the condenser. Fig. 2 is a verof the lubricator-casing and respectively contical section. on the plane passing through the nect with ducts N and N, which lead into the 0 sight-feeds. Fig. 3 is a horizontal section. chamber B and deposit their: oil in the bot- Fig. 4 is a vertical section of the chamber in tom thereof on either side of the partition 0, the steaininduction pipe and showing the whence it flows through the independent pipes which feed oil to the engine-cylinders. pipes P and P to the valve-chests or cyli11- The same letters are employed in all the ders of the engine. The partition 0 divides 3 5 figures in the indication of identical parts. the oil and sends the proper supply to each Steam from the boiler is introduced into of the cylinders. the chamber B through a pipe A, provided Should compound engines be employed, the with a trap at A, intended to prevent any number of the sight-feeds and connecting oiloil which may be in the said chamber flowing discharge pipes may be increased to corre- 0 outward into the boiler. Thence the steam spend to the number of cylinders to be lubri- 0 passes through the pipe 0 into a chamber eated. In such casethere would be as many 0 from which the pipe G leads to the consight glasses as there are cylinders and a denser D. The pipe 0 may extend into the corresponding number of discharge-pipes chamber C far enough to terminate above the leading from the respective sight-feeds, and

5 level of pipe 0, and its upper end may be alldischarging into chamberB. In such case, formed with a seat to receive the conical as there must he an independent pipe leadpoint of a valve 0 by which the steam may ing to each cylinder of the compound engine, be shut off from the condenser. \Vhile the the lower end of the chamber B must be steam is preferably taken from the chamber formed with as many partitions as will iso- 50 B, because that is the cheapest and simplest late the discharge ends of the pipes N and N,

850., respectively, and cause each to deliver its oil to its own appropriate cylinder.

The partition separating the lower ends of the pipes N and N, 850., do not extend to the top of the chamber B, which would cut the chamber into a series of chambers, some of them having no connection with the steampipe, for that would destroy the very purpose of my invention, which is to have an equal pressure of steam on the interior of the oil-chamber from which the oil is taken and the interior of the chamber into which it is delivered and from which it flows to the cylinders or valve-chests of the engine, thereby dispensing with the equalizing-tubes necessary in other locomotive-engine lubricators.

While my invention is described in its application to locomotive-engine lubricators, it is manifest that it may also be applied to stationary engines when two or more cylinders are employed, whether double or compound engines.

In order that the waste of steam into the cylinders may not be excessive, the oil-supply pipes P and P may be throttled by making the connections with a small orifice or by using regulating valves or cocks in the supplypipes.

The partitions 0 should extend far enough between the pipes N and N, &c., to prevent the oil passing to other pipes than the ones they are intended, respectively, to supply; but the upper part of the chamber B should be entirely in connection with the steam-supply pipe, either by cutting off the partitions, as shown, or perforating them, so that the steam-pressure shall reach the mouths of all the pipes N, &c., so as to substantially equalize the pressure at both ends of the oilducts leading out of the oil-cylinder.

I am aware that other devices have been employed for securing an equalized pressure on the steam-induction and oil-discharging pipes, and consequentlyI do not seek to cover, broadly, other means of obtaining such equalization of pressure. I am aware, too, that checkvalves have been used in analogous lubricators for permitting the inflow of steam and yet preventing an outflow of oil through the steam-pipe; but the trap A in the steam-pipe A, it will be observed, discharges steam into the top of the chamber 13 and above the partition O, and consequentlyif one of the discharge-pipes P or P should become stopped up and condensation occur therein and oil accumulate unobserved by the engineerwho ought, however, to be informed by the stoppage of the feed in one of the sight-feed glasses-the accumulation of such Water and oil would only cause it to flow over the top of .the partition and into the other compartment and thence to the cylinder; and even if both should be stopped and the chamber B filled with oil and water the oil could not flow back into the boiler through the trap, while it would do so where the steam is introduced under a check-valve in the top of the partition, which, when opened by the entering steam, would permit the oil to fiow down through the valve and steam-pipe into the boiler.

YVhat I claim as my invention, and desire to secure by Letters Patent, is

1. 111 a hydrostatic lnbricator, the combination of a condenser and single oil-chamber, multiple pipes I I, which take oil from the common chamber, multiple adjustable updrop sight-feeds, into which such pipes dis charge, and oil-discharge tubes which lead from the respective sight-feeds to chamber B, into which they discharge such oil, and which is connected by steam-pipes with the boiler and condenser, and provided with a partition which divides the lower part of the chamber into compartments, into which the oil-ducts N N respectively discharge their oil, and multiple pipes which carry the oil from the respective compartments to the several cylinders to be lubricated, substantially as set forth.

2. The combination of the condenser D, oilchamber F, pipes I I, up-drop sight-feeds K K, pipes leading therefrom, and chamber B, with partition 0, and the steam-induction pipe A and trap A, arranged to discharge steam into the chamber B above the plane of the top of the partition, substantially as set forth.

Subscribed in the presence of two attesting witnesses.

FREDRICH IV. KRANTZ.

Witnesses:

RODNEY MAsoN, FRANK. XV. MARVIN. 

